KDateTime: next iteration

[David Jarvie]

On Tuesday 29 November 2005 11:52, Nicolas Goutte wrote:
>On Tuesday 29 November 2005 11:46, Nicolas Goutte wrote:
>> On Tuesday 29 November 2005 11:11, Thiago Macieira wrote:
>> > Nicolas Goutte wrote:
>> > >On Monday 28 November 2005 21:50, Thiago Macieira wrote:
>> > >> David Jarvie wrote:
>> > >> >  UTC
>> > >> >   Offset from UTC
>> > >>
>> > >> What's the difference between those two? UTC is UTC + 0 (or -0, if
>> > >> you'd rather), so it's the same as an offset from UTC.
>> > >
>> > >07:20 +0000 (UTC) is not the same as 08:20 +0100 ("Offset from UTC")
>> >
>> > So we have 1500 types of timezones? One for each possible minute of the
>> > 25-hour span of timezones?
>>
>> No, we have simply a time offset. That is the current state of the
>> discussions.
>>
>> > I thought David listed 5 types.
>> >
>> > >It could become useful for example if Konqueror uses KDateTime instead
>> > > of seconds since the epoch. In that case, you can use it in the FISH
>> > > KIO slave to tell that you have no idea about the timezone, as it is an
>> > > information thatthe FISH protocol does not transmit.
>> >
>> > FISH should be modified to transmit it. All it has to do is set TZ=UTC
>> > before sending anything.
>>
>> Well, as far as I understand, FISH is supposed to work with other FISH
>> servers. (However I am not sure if it is really supported now).
>>
>> Also I am not sure that the TZ trick works on Windows. (However there,
>> /dev/ null is probably a problem too, as reported.)
>>
>> Of course, FISH is only an example. I am sure that there are other cases.
>> (I can think about RFC 2822's -0000 time offset.)
>
>The difference is that KDateTime considers such a time being by default a 
>local time, while RFC 2822 assumes that such a time is UTC.

RFC 2822 says:
   The form "+0000" SHOULD be used to indicate a time zone at
   Universal Time.  Though "-0000" also indicates Universal Time, it is
   used to indicate that the time was generated on a system that may be
   in a local time zone other than Universal Time and therefore
   indicates that the date-time contains no information about the local
   time zone.

--
David Jarvie.
KAlarm author & maintainer.
http://www.astrojar.org.uk/linux/kalarm.html